# -*- coding: utf-8 -*-
"""
VirtualBox Guest Additions installer state
"""
from __future__ import absolute_import, print_function, unicode_literals

# Import python libs
import logging

log = logging.getLogger(__name__)


def additions_installed(name, reboot=False, upgrade_os=False):
    """
    Ensure that the VirtualBox Guest Additions are installed. Uses the CD,
    connected by VirtualBox.

    name
        The name has no functional value and is only used as a tracking
        reference.
    reboot : False
        Restart OS to complete installation.
    upgrade_os : False
        Upgrade OS (to ensure the latests version of kernel and developer tools
        installed).
    """
    ret = {"name": name, "changes": {}, "result": False, "comment": ""}
    current_state = __salt__["vbox_guest.additions_version"]()
    if current_state:
        ret["result"] = True
        ret["comment"] = "System already in the correct state"
        return ret
    if __opts__["test"]:
        ret["comment"] = "The state of VirtualBox Guest Additions will be " "changed."
        ret["changes"] = {
            "old": current_state,
            "new": True,
        }
        ret["result"] = None
        return ret

    new_state = __salt__["vbox_guest.additions_install"](
        reboot=reboot, upgrade_os=upgrade_os
    )

    ret["comment"] = "The state of VirtualBox Guest Additions was changed!"
    ret["changes"] = {
        "old": current_state,
        "new": new_state,
    }
    ret["result"] = bool(new_state)
    return ret


def additions_removed(name, force=False):
    """
    Ensure that the VirtualBox Guest Additions are removed. Uses the CD,
    connected by VirtualBox.

    To connect VirtualBox Guest Additions via VirtualBox graphical interface
    press 'Host+D' ('Host' is usually 'Right Ctrl').

    name
        The name has no functional value and is only used as a tracking
        reference.
    force
        Force VirtualBox Guest Additions removing.
    """
    ret = {"name": name, "changes": {}, "result": False, "comment": ""}
    current_state = __salt__["vbox_guest.additions_version"]()
    if not current_state:
        ret["result"] = True
        ret["comment"] = "System already in the correct state"
        return ret
    if __opts__["test"]:
        ret["comment"] = "The state of VirtualBox Guest Additions will be " "changed."
        ret["changes"] = {
            "old": current_state,
            "new": True,
        }
        ret["result"] = None
        return ret

    new_state = __salt__["vbox_guest.additions_remove"](force=force)

    ret["comment"] = "The state of VirtualBox Guest Additions was changed!"
    ret["changes"] = {
        "old": current_state,
        "new": new_state,
    }
    ret["result"] = bool(new_state)
    return ret


def grant_access_to_shared_folders_to(name, users=None):
    """
    Grant access to auto-mounted shared folders to the users.

    User is specified by it's name. To grant access for several users use
    argument `users`.

    name
        Name of the user to grant access to auto-mounted shared folders to.
    users
        List of names of users to grant access to auto-mounted shared folders to.
        If specified, `name` will not be taken into account.
    """
    ret = {"name": name, "changes": {}, "result": False, "comment": ""}
    current_state = __salt__["vbox_guest.list_shared_folders_users"]()
    if users is None:
        users = [name]
    if current_state == users:
        ret["result"] = True
        ret["comment"] = "System already in the correct state"
        return ret
    if __opts__["test"]:
        ret["comment"] = (
            "List of users who have access to auto-mounted "
            "shared folders will be changed"
        )
        ret["changes"] = {
            "old": current_state,
            "new": users,
        }
        ret["result"] = None
        return ret

    new_state = __salt__["vbox_guest.grant_access_to_shared_folders_to"](
        name=name, users=users
    )

    ret["comment"] = (
        "List of users who have access to auto-mounted shared " "folders was changed"
    )
    ret["changes"] = {
        "old": current_state,
        "new": new_state,
    }
    ret["result"] = True
    return ret
